Your questions about SoFi Hong Kong are answered here

SoFi Securities (Hong Kong) Limited is a licensed corporation in Hong Kong and regulated by the Securities and Futures Commission of Hong Kong. Your cash is held in segregated custodial corporate accounts with HSBC and Bank of China and your US and Hong Kong stocks are held in custody with the Depository Trust & Clearing Company (DTCC) and the Hong Kong Securities Clearing Company Limited (“HKSCC”) respectively. We use bank level security and data encryption to protect you. We regularly perform third party penetration testing to ensure our apps and your information is secured with the most advanced security software and practices.